28201106 has 8 divisors (see below), whose sum is σ = 42403404. Its totient is φ = 14066640.

The previous prime is 28201087. The next prime is 28201189. The reversal of 28201106 is 60110282.

It can be written as a sum of positive squares in 2 ways, for example, as 28185481 + 15625 = 5309^2 + 125^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-4 number, since 4×28201106⁴ (a number of 31 digits) contains 4444 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15905 + ... + 17588.

Almost surely, 2^28201106 is an apocalyptic number.

28201106 is a deficient number, since it is larger than the sum of its proper divisors (14202298).

28201106 is a wasteful number, since it uses less digits than its factorization.

28201106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33916.

The product of its (nonzero) digits is 192, while the sum is 20.

The square root of 28201106 is about 5310.4713538442. The cubic root of 28201106 is about 304.3841591353.

Adding to 28201106 its reverse (60110282), we get a palindrome (88311388).

The spelling of 28201106 in words is "twenty-eight million, two hundred one thousand, one hundred six".